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  1. go to the vet and get it checked out and you will be able to

    4 Answers · Pets · 15/10/2008

  2. I think they feed some sort of sulphur , but you should consult a vet ,

    1 Answers · Health · 06/07/2008

  3. It isn't going to happen for influenza because the virus undergoes a change precluding recognition by the immune system nearly every season. As for the "common cold", there are myriads of viral species and subspecies(variants) in the...

    2 Answers · Science & Mathematics · 09/08/2013

  4. Helper T cells are essential in determining B cell antibody class switching, in the activation and growth of cytotoxic T cells. So T helper cells regulate the activation of both cytotoxic T cells and antibody...

    2 Answers · Science & Mathematics · 23/11/2007

  5. An antigen is a foreign protein (such as bacteria or virus). I called it foreign because it is not a normal part of your body. Your cell membranes are designed to recognize that those substances are foreign...

    3 Answers · Science & Mathematics · 28/07/2009

  6. You don't get the same virus/sickness more than once. Everytime you get a cold or flu it is caused by a different type of virus. The same type of virus cannot make you sick more than once.

    2 Answers · Health · 14/06/2013

  7. a vaccine is a synthetic bacteria. a specific vaccine has the same structure of the bacteria that you want to be immune from. your antibodies will then record the structure of the vaccine so that when you can acquire that bacteria, your body will be able to produce...

    1 Answers · Health · 22/05/2012

  8. I'm pretty sure its mutations, mutations create the new species.

    1 Answers · Health · 13/11/2011

  9. only if it's the same strain. Usually it changes every year. They base the flu shot on the virus strain that was most popular the year before. Most of the time a new strain comes a long and the shot doesn't help as well.

    5 Answers · Health · 07/07/2007

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